Part – I
Searching Google
Google’s Boolean default is and, that means if you enter query words without modifiers, Google will search for all of them. If you search for:-
Snowblower Honda “
Google will search for all the words. If you want to specify that either word is acceptable, you put an OR between each item:-
Snowblower OR Snowmobile OR “
If you want to definitely have one term and have one of two or more other terms, you group them with parentheses, like this:-
Snowblower (snowmobile OR “
This query searches for the word “snowmobile†or phrase “
Snowblower (snowmobile | “
If you want to specify that a query item must not appear in your results, use a – (minus sign or dash).
Snowblower snowmobile – “
This will seach for pages that contain both the words “snowblower†and “snowmobile†but not the phrase “

Thanks, that is great tip for me.